参数资料
| 型号： | ISL62881CIRTZ |
| 厂商： | Intersil |
| 文件页数： | 26/37页 |
| 文件大小： | 0K |
| 描述： | IC REG PWM SGL PHASE 28TQFN |
| 标准包装： | 75 |
| 应用： | 控制器，Intel IMVP-6.5? |
| 输入电压： | 4.5 V ~ 25 V |
| 输出数： | 1 |
| 输出电压： | 0.013 V ~ 1.5 V |
| 工作温度： | -40°C ~ 100°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-WFQFN 裸露焊盘 |
| 供应商设备封装： | 28-TQFN-EP（4x4） |
| 包装： | 管件 |
| 配用： | ISL62881CCPUEVAL2Z-ND - EVAL BOARD ISL62881CCPU 28QFN |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页当前第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页
ISL62881C, ISL62881D
TABLE 5. LAYOUT CONSIDERATIONS (Continued)
NAME
VSEN
RTN
VDD
IMON
ISUM-
ISUM+
LAYOUT CONSIDERATION
Place the VSEN/RTN filter (C12, C13) in close proximity of the controller for good decoupling.
A capacitor (C16) decouples it to GND. Place it in close proximity of the controller.
Place the filter capacitor (C21) close to the CPU.
Place the current sensing circuit in general proximity of the controller.
Place C82 very close to the controller.
Place NTC thermistors R 42 next to inductor (L1) so it senses the inductor temperature correctly.
The power stage sends a pair of VSUM+ and VSUM- signals to the controller. Run these two signal traces in parallel
fashion with decent width (>20mil).
IMPORTANT: Sense the inductor current by routing the sensing circuit to the inductor pads.
Route R 63 to the phase-node side pad of inductor L1. Route the other current sensing trace to the output side pad
of inductor L1.
If possible, route the traces on a different layer from the inductor pad layer and use vias to connect the traces to
the center of the pads. If no via is allowed on the pad, consider routing the traces into the pads from the inside of
the inductor. The following drawings show the two preferred ways of routing current sensing traces.
INDUCTOR
VIAS
CURRENT-
SENSING TRACES
INDUCTOR
CURRENT-
SENSING TRACES
VIN
BOOT
UGATE
PHASE
A capacitor (C17) decouples it to GND. Place it in close proximity of the controller.
Use decent wide trace (>30mil). Avoid any sensitive analog signal trace from crossing over or getting close.
Run these two traces in parallel fashion with decent width (>30mil). Avoid any sensitive analog signal trace from
crossing over or getting close. Recommend routing PHASE trace to the high-side MOSFET (Q2 and Q8) source pins
instead of general phase node copper.
VSSP Run these two traces in parallel fashion with decent width (>30mil). Avoid any sensitive analog signal trace from
LGATE
or
LGATEa and
LGATEb
VCCP
VID0~6
VR_ON
crossing over or getting close. Recommend routing VSSP to the low-side MOSFET (Q3 and Q9) source pins instead
of general power ground plane for better performance.
A capacitor (C22) decouples it to GND. Place it in close proximity of the controller.
No special consideration.
No special consideration.
DPRSLPVR No special consideration.
Phase Node Minimize phase node copper area. Don’t let the phase node copper overlap with/getting close to other sensitive
traces. Cut the power ground plane to avoid overlapping with phase node copper.
Minimize the loop consisting of input capacitor, high-side MOSFETs and low-side MOSFETs (e.g.: C27, C33, Q2, Q8,
Q3 and Q9).
26
FN7596.0
March 8, 2010
相关PDF资料 |
PDF描述 |
|---|---|
| ISL62881HRTZ | IC REG PWM SGL PHASE 28TQFN |
| ISL62882IRTZ | IC REG PWM 2PHASE BUCK 40TQFN |
| ISL62883IRTZ | IC REG PWM 3PHASE BUCK 40TQFN |
| ISL6292BCRZ | IC CHARGER LI-ION 4.2V 4X4 16QFN |
| ISL6294IBZ | IC CHRGR LI-ION SGL 8-SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL62881CIRTZ-T | 功能描述:直流/直流开关调节器 1-PHS PWM BUCKG FOR MICROPROC PWR SUPPLY RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| ISL62881D | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Single-Phase PWM Regulator for IMVP-6.5a?￠ Mobile CPUs and GPUs |
| ISL62881DHRTZ | 功能描述:直流/直流开关调节器 1 PHS CNTRLR W/INTEG DRVR 32LD 5X5 RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| ISL62881DHRTZ-T | 功能描述:直流/直流开关调节器 1 PHS CNTRLR W/INTEG DRVR 32LD 5X5 RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| ISL62881HRTZ | 功能描述:直流/直流开关调节器 1 PHS PWM BUCKG FOR MICROPROCESR PWR SUP RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
发布紧急采购，3分钟左右您将得到回复。